Ultrasound with a frequency of 4.40 MHz can be used to produce images of the human body. If the speed of sound in the body is the same as in salt water, 1.30 km/s, what is the length of a 4.40-MHz pressure wave in the body

What best describes a sonar wave? transverse and electromagnetic transverse and mechanical longitudinal and electromagnetic longitudinal and mechanical

Laboratory experiments, observational field studies, and model-building are all examples of different forms of scientific investigations.  in what way do laboratory experiments primarily differ from other forms of scientific investigations?   a.  a laboratory experiment is the only accepted form of investigation within the scientific community.  b.  studies about how things behave in nature or studies involving very large objects are best answered through laboratory experiments.  c.  laboratory experiments involve the identification and control of variables.  d.  data can only be generated through laboratory experiments, not other forms of investigation.

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.